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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：Q07350 New Search
8PDB entries
8Biological assembly
9chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
4DGW Crystal Structure of the SF3a splicing factor complex of U2 snRNP Deposited 2012-01-26 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain C 50–266（217 aa） Fragment：C-terminal domain, UNP residues 50-266
Mutation：L153M Non-standard monomer：Yes (specific site not provided by mmCIF) ZN ZINC ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；290 K；8-12% Ethanol, 100mM MES, pH 6, VAPOR DIFFUSION, HANGING DROP, temperature 290K
Resolution 3.11 Å R-free 0.278
5GM6 Cryo-EM structure of the activated spliceosome (Bact complex) at 3.5 angstrom resolution Deposited 2016-07-12 Assembly 1 Protein–RNA Heteromer；Protein × 41 PDB declaration: 46-meric（46） Consistent with all polymers
Chain I 1–266（266 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 5 ZN ZINC ION × 13 ADP ADENOSINE-5'-DIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8；CEB buffer (10 mM Tris-HCl, pH 8.0, 75 mM NaCl, 1 mM Mg(OAc)2, 1 mM imidazole, 0.01% NP40, 1 mM TCEP, 0.5 mM EGTA)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
5NRL Structure of a pre-catalytic spliceosome Deposited 2017-04-24 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 58-meric（58） Consistent with all polymers
Chain U 1–266（266 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ZN ZINC ION × 7 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9；Buffer pH: HEPES, 7.9; EDTA, 8.0
cryo-EM vitrification conditions Cryogen ETHANE；Grids were glow-discharged for 15 s before deposition of 3 microliter sample (~1.5 mg mL-1), and subsequently incubated for 2-3.5 s before blotting and vitrification by plunging into liquid ethane with a Vitrobot Mark III (FEI) operated at 4 degrees Celsius and 100% humidity.
Resolution 7.20 Å
5ZWM Cryo-EM structure of the yeast pre-B complex at an average resolution of 3.4~4.6 angstrom (tri-snRNP and U2 snRNP Part) Deposited 2018-05-16 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 57-meric（57） Consistent with all polymers
Chain v 1–266（266 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ZN ZINC ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
5ZWO Cryo-EM structure of the yeast B complex at average resolution of 3.9 angstrom Deposited 2018-05-16 Assembly 1 Protein–RNA Heteromer；Protein × 55 PDB declaration: 60-meric（60） Consistent with all polymers
Chain v 1–266（266 aa）
Not recorded GTP GUANOSINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
6G90 Prespliceosome structure provides insight into spliceosome assembly and regulation (map A2) Deposited 2018-04-10 Assembly 1 Protein–RNA Heteromer；Protein × 35 PDB declaration: 38-meric（38） Consistent with all polymers
Chain U 1–114（114 aa）
Chain U 137–266（130 aa）
Not recorded ZN ZINC ION × 9 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE；Grids were blotted for 2-3.5 s and vitrified by plunging into liquid ethane with a FEI Vitrobot Mark III operated at 4 degree Celsius and 100% humidity.
Resolution 4.00 Å
7OQB The U2 part of Saccharomyces cerevisiae spliceosomal pre-A complex (delta BS-A ACT1) Deposited 2021-06-03 Assembly 1 Protein–RNA Heteromer；Protein × 19 PDB declaration: 21-meric（21） Consistent with all polymers
Chain U 1–266（266 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 9.00 Å
7OQE Saccharomyces cerevisiae spliceosomal pre-A complex (delta BS-A ACT1) Deposited 2021-06-03 Assembly 1 Protein–RNA Heteromer；Protein × 36 PDB declaration: 39-meric（39） Consistent with all polymers
Chain U 1–266（266 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.90 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.